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SubjectRe: [PATCH] perf jevents: Fix resource leak in process_mapfile()
On Wed, Oct 16, 2019 at 03:47:23PM +0800, Yunfeng Ye wrote:
> There are memory leaks and file descriptor resource leaks in
> process_mapfile().
>
> Fix this by adding free() and fclose() on the error paths.
>
> Fixes: 80eeb67fe577 ("perf jevents: Program to convert JSON file")
> Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>

Acked-by: Jiri Olsa <jolsa@kernel.org>

thanks,
jirka

> ---
> tools/perf/pmu-events/jevents.c | 9 +++++++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
> index e2837260ca4d..6e60d4cff592 100644
> --- a/tools/perf/pmu-events/jevents.c
> +++ b/tools/perf/pmu-events/jevents.c
> @@ -758,6 +758,7 @@ static int process_mapfile(FILE *outfp, char *fpath)
> char *line, *p;
> int line_num;
> char *tblname;
> + int ret = 0;
>
> pr_info("%s: Processing mapfile %s\n", prog, fpath);
>
> @@ -769,6 +770,7 @@ static int process_mapfile(FILE *outfp, char *fpath)
> if (!mapfp) {
> pr_info("%s: Error %s opening %s\n", prog, strerror(errno),
> fpath);
> + free(line);
> return -1;
> }
>
> @@ -795,7 +797,8 @@ static int process_mapfile(FILE *outfp, char *fpath)
> /* TODO Deal with lines longer than 16K */
> pr_info("%s: Mapfile %s: line %d too long, aborting\n",
> prog, fpath, line_num);
> - return -1;
> + ret = -1;
> + goto out;
> }
> line[strlen(line)-1] = '\0';
>
> @@ -825,7 +828,9 @@ static int process_mapfile(FILE *outfp, char *fpath)
>
> out:
> print_mapping_table_suffix(outfp);
> - return 0;
> + fclose(mapfp);
> + free(line);
> + return ret;
> }
>
> /*
> --
> 2.7.4.3
>

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